Improvement in cooking-stoves



a Sheets-Shet 1.

J. A. LAWSON.

Cooking-Stove.

Patented March 12, 1878.

3 Sheets-Sheet 2.

J. A. LAWSON. Cooking-Stove;

No. 201,256. Patented March 12, I878.

WIT-N IN JEN- u F] 9. 4,. 9 GMM UNITED STATES PATENT OFF-Ion.

JAMES A. LAWSON, OF TROY,'NEW YORK.

IMPROVEMENT IN COOKING-SIOVES.

Specification forming part of Letters Patent No. 201,256, dated March 12, 1878 application filed October 19, 1877. I

To all whom it may concern:

Be it known that I, JAuEs A. LAWSON, of

' Troy, in the county of Rensselaer, and in the Stateof New York, haveinvented certain new and useful Improvements in Cooking-Stoves; and dohereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,making a partof this specification, in which- Figure l is a perspectiveview of my improved stove, a portion of the ash-pit being,

removed to show the construction of the fluestop. Fig; 2 is a like viewof the rear end of said stove, a portion of the casing of the reservoirbeing broken away, so as to show the interior construction of parts.Fig. 3 is a cross-section of the stove through the center of thefuel-chamber. Fig. 4 is a central section of said stove upon a lineextending from front to rear, and Fig. 5 is a cross-section of the sameupon line as w of Fig. 4.

Letters of like name and kind refer to like parts in each of thefigures.

The design of my invention is to increase the economy, efficiency, anddurability of cooking-stoves, and render the same more easily vided withan ash-chamber in front of its bottom oven-flues, a fine stop or plate,which incloses the entire front ends of the said flues within saidash-chamber, and is capable of being drawn longitudinally outwardthrough the side plate, so as to entirely uncover said flue ends,substantially as and for the purpose hereinafter set forth.

It consists, finally, in the form of the guard plate interposed betweenthe rear portion of the stove and thefront of the reservoir,substantially as and'for the purpose hereinafter set forth.

In the annexed drawings, A represents the bottom plate, B- the topplate, 0 and G the side plates, D the front plate, E the rear plate,

and F the hearth, of a stove, which is provided with a fuel-chamber, G,ash-pit H, oven I, and the usual system of horizontal and verticalflues. r

The ash-pit H is located partly beneath the fuel-chamber G, and in partbeneath the elevated hearth F, and is separated from the oven I by meansof a flue-plate, K, which ex tends downward only to the bottom of saidoven, the front end of the bottom flues L being thus left uninclosed. Aplate, M, which corresponds in size and shape to the like features ofthe open end of I the flues L, is fitted over the latter, and is.

held in place laterally and vertically by means of suitable lugs k, thatare provided upon the flue-plate K, but is permitted to slidelongitudinally and laterally outward through a correspondingly shaped.opening, which is formed within one of the side plates 0, the

arrangement being such as to enable the entire front of said flues to beuncovered when: ever it is necessary to remove ashes and soot from theirinteriors.

The elevated hearth F is provided with the usual vertical opening infront of the front plate D, and upon its upper side has a supplementalhearth, F, which corresponds therewith in size and shape, and is held inplace thereon, While permitted to slide forward and back, by means oflugs f, which project downward from said supplemental hearth and engageswith the lower side of said hearth at the side edges of its opening.

Within the front portion of the top plate B is provided an opening, b,through which ac cess may be had to the fuel-chamber G for the purposeof supplying fuel for combustion, which opening extends downward throughabout one-half the depth of the downwardprojecting molded edge I) ofsaid plate, and, unlike those usually provided for such pur= pose, doesnot divide said plate verticallyat such point into two sections, but iscontained wholly within and is bounded by solid portions of the latter.

so asto be capable of being swung edgewise away from or over saidopening.

Wi hin the door B are provided a number of openings, b,which may be usedto admit air to the upper side of the burning fuel, andare inclosed,when desired, by a damper, b, that is secured upon and slides over thelower face-of said door:

V Therearplate E is removed fromits upper end downward about one-thirdits depth, and:

over the opening thus formed is fitted ar'eservoir-casing, which has theform shown inFig. 2; andconsists of an upper portion, N, thatcorresponds to and contains withinits open top the reservoir 0, andbelow the same a 7 lower portion, N, which is extended rearward andforms a flue'beneath said reservoir.

At the transverse center of the casing N a' rearward swelling portion,it, forms a flue, which, at its lowerend, communicates with the hue N,and atits upper end has a collar, n,

for the reception of a smoke-pipe.

V The upper portion of the casing N extends forward within the topplateB', and'has its front side nearly upon a line 'midway between therear oven-plated and the back plate E, whilefrom said top-plate at suchpoint a flue-plate, P, extends downward and rearward in a curve nearlyto the bottom of the flue N, and laterally extends between thesideplates 0.

The reservoir 0 has its bottom formed upon a curved line from fronttorear, and its front side curved rearward, to correspond to theconformation of the flue-plate P. v

The usual dampers for closing communica' tion between the top oven-flueQ, and the ascending flue R, and for regulating communication betweenthe descending flues S and the reservoir-casin g, being provided, theoperation is as follows:

When the direct draft is employed, the I heated escaping products ofcombustion pass rearward and downward through the upper portion of eachof the rear flues R and S, and 'enter the reservoir-flue N from beneaththe lower edge of the flue-plate I, from whence they pass upward, andare diffused around the reservoir 0, and finally'escape into'and' tocause its liquid contents to maintain a temperature but little below'theboiling-point. In consequence of the peculiar shapeof the bottom of thereservoir 0, the currents of heated gases impinge upon arounded surface,7 V

and are less interrupted intheir flow than would be the case were thebottom of said reservoir square, while from the same peculiarity ofconstruction sediment is less liable to deposit in the interior of thelatter, the result of which deposit isthe burning out of the metal atsuch points.

The guard-plate P effectually protects the front of the reservoir 0 fromthe too intense heat of the escaping gases, without in any materialdegree interfering with the flow of the latter. I S

In orderthat the flue or space N beneath "the reservoir 0: may be easilyfreed from.

ashes and dust, a door, N, is provided at one 7 or both ends, which"door enables every portion of said flue to be easily and; readilyreached for the purpose named.

The space between the bottom of the reser- V voir-casing and thebottomplate A is inclosed by means of a warming-closet, T, which is,

preferably, formed with or attached to said casing,'and,in horizontalshape and dimensions', corresponds to the like features of the same.

The construction of the feed-door B enables the fuel-chamber to beconstructed as high in front as in rear, and prevents coal or ashes fromdropping out when said door is opened.

By means" of the flue-stop M, the entire front portions of the bottomflues L can be exposed to view, and said flues easily and thoroughlycleaned from ashes or soot, while thesupplemental-or detachable hearth Fenables the entire upper side of the ash-pit to be opened, and greatlyfacilitates the operation named of cleaning said flues.

I am aware that adoor has'before been pro- 'vided at the rear'of a stoveopening into the space beneath the reservoir, and do not claim sucharrangement.

Having thus fully set forth the nature and merits-of my inventiomwhat Iclaim as new,

1. In a cooking-stove, afeed-openingformed within the top plate andinclosed by means of a pivoted edgewisefswinging door, which iscontained wholly within the ordinary lines of said plate, and whenopened is upon a line horizontally with the same, substantially as andfor the purpose specified.

2. Ina cookingstove, a supplemental hearthslid'e, which rests upon andincloses the ashp'it and entire upperside of the ordinary hearth,substantially as and for the purpose shown.

3. In a cooking-stove provided with an ashchamberin front of its bottomoven-flues, a flue stop or plate which incloses the'entire front ends ofsaid fines within said ash-chamber, and is capable of being drawnlongitudinally outward through the side plate, so as to entirely uncoversaid flue ends, substantially as and for the purpose set forth.

4.. In combination with the reservoir 0 and with the flues N, R, and S,the guard-plate P, which extends downward and rearward in a curve, andis constructed and relatively arranged in the manner and for the purposeset forth.

In testimony that I claim the foregoing I have hereunto set my hand this12th day of October, 1877.

J. A. LAWSON.

Witnesses:

HERBERT A. VIE'rs, ROBERT S. W001).

